Deikus van duijl



W J. 0. H. VAN DUIJL.

ADJUSTABLE SPANNER 0R WRENGH. No. 600,818. Patented Mar. 15,1898.

NlTE 'TATES *ATENT OFFICE.

J OZUA CORNELIS HENDRIKUS VAN DUIJL, OF KRALINGSOHEVEER, NETHERLANDS.

ADJUSTABLE SPANNER OR WRENCH.

SPECIFICATION forming part of Letters Patent No. 600,813, dated March15, 1898. Application filed April 5, 1897. Serial No. 630,818- (Nomodel.)

To all whom it may concern.-

Be it known that I, JoZUA CORNELIS HEN- DRIKUS VAN DUIJL, engineer, asubject of the Queen of the Netherlands, residing at Kralingsche-Veer,near Rotterdam, in the King dom of the Netherlands, have inventedcertain new and useful Improvements in Adjusfable Spanners or Wrenches,of which the following is a specification, reference being had to theaccompanying drawings,in which Figure 1 is a front elevation; Fig. 1*,aplan; Fig. 1 ,a transverse section on the line I II, Fig. 1; and Figs. 2and 3, side elevations, looking from the left and right hand sides,respectively, of Fig. 1, showing myimproved Wren oh.

This invention relates to adjustable spanners or wrenches, and has forits object to so construct wrenches that the edges of the upper andlower jaws shall not wear off and so that the movable upper jaw of thewrench cannot bend either backward or sidewise nor break off, as isoften the case in wrenches of the well-known construction when more thanusual work is required of them, or if they do v not break off the upperjaw will slip off the nut and bend out of shape, so that the wrenchbecomes useless.

According to the present improvements'the upper jaw of the wrench isstrengthened by providing the wrench with a back piece or bridge againstwhich the upper jaw bears in' its different positions. The upper jaw is,moreover, guided in a groove in the said bridge or support, so that thewrench cannot slip off if used vertically above the nut.

Referring to the drawings, the body D of the wrench is recessed for agreater portion of its length to receive the fiat slide-bar or shank B,having its lower part B provided with screw-threads at its edges andcarrying at its upper end the sliding jaw A. The body of the wrench isprovided on one of its faces with a longitudinally-extending slot oraperture 0, somewhat narrower than the recess, which affords a sight ofthe threaded portion of the bar B to determine the limit of its outeradjustment and also ready access to the interior of the wrench forcleansing purposes. The side walls of the slot or aperture 0 serve asflanges to afford lateral supportv for the upper or plane part of thebar B.

In order to prevent bending back of the upper jaw A, the body ofthewrench is eX- tended, as at G, behind the said upper jaw A up to the topof this jaw when in its highest position, and is suitably strengthened,as at H, thus forming a bridge against which the upper jaw bears in itsdifferent positions. As the upper jaw A moves it slides closely over theface of the bridge G. This face is provided with a curved or squaregroove 1), in which a correspondingly-shaped rib or ridge 0 at the backof the upper jaw A slides. By this arrangement the bar B is preventedfrom bending and the wrench from turning or slipping off the nut when itis used verti cally above it. As the upper jaw is thus guided in thebridge, the sliding bar B cannot bend nor the wrench slip off so easilyas heretofore and the edges of both jaws will always remain sharp.

What I claim is An adjustable spanner or wrench comprising the bodyportion having a jaw, an upwardextending support, and a strengtheningportion for said support formed integral therewith, a longitudinalpassage formed in said body portion, a longitudinally-extending slot oraperture provided in one face of the wrench affording access thereto, amovable jaw carrying a threaded shank adapted to work in said passage, alateral opening formed in the body portion, a threaded nut seated insaid opening and adapted to engage the threads of the shank, a groove insaid support, and a feather on the movable jaw adapted to work in saidgroove, the combination being and operating substantially as and in themanner set forth.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

JOZUA OORNELIS HENDRIKUS VAN DUIJL.

Witnesses:

CHARLES BROWN, A. VAN DER LINDE.

